Pipe beveling machine



Filed April 2o, 1945 2 sheets-sheet 1 Dw- 12, 1944- B. v. ELLIOT-r PIPE BEVELLING MACHINE Filed April 20, 1945 2 Sheets-Sheet 2 Patented Dec. 12, 1944 PIPE BEVELING MACHINE Bernard V. Elliott, Bartlesville, Okla.. assignor to H. C. Price Company, Bartlesville, Okla.

Application April 2t, 1943, Serial No. 483,811 3 Claims. (Cl. 30S-+15) The present invention relates to a pipe beveling machine for cutting and preparing pipe for welding by means of a cutting torch.

It is an object of the presentl invention to pro vide, a portable machine for use in cutting pipe in the neld, and particularly to pipes of large diameters used in constructing pipe lines. The machine is constructed and operates in such manner that it cuts and nevels the pipe to any desired angle and the cut obtained is square with reference to the axis of the pipe.

.d turther object or the invention is the provision oi a novel supporting means for rigidly supporting the pipe to be cut and which is readily adapted for mounting on pipes of diderent diamsters` A stilliurther object oi the invention is the provision or a novel supporting means for the cutting torch whereby the cutting torch may be adjusted relative to the work to vary the degree oi bevel on either side ci the perpendicular.

@ther objects oi the invention will become apparent to those skilled in the art from the fol lowing detailed description taken in connection with the accompanying drawings which disclose a preferred embodiment of the invention.

i'ligure i is a side 'elevation oi the device mounted on a pipe, y

Figure 2 is a iront elevation thereof,

' iiigure d is a section taken on the line t-t of Figure l,

Figure t is a section taken on the line 2i-t ci' Figure E,

lil

lili

Figure 5 is an enlarged perspective view of the plate it. Additional bracing members in the l iorm ot angle irons il and it are respectively welded to members it and it on each side oi member it. AO series oi corner plates it are welded to the angle irons and to members it and it to provide additional bracing means for the iramefand also serve as a support for leg members 2t adapted to bear against the upper surface of pipe i0.

Each leg member 20 is made up of a. plurality of spacers li secured together by means or a bolt 22. Referring to Figure 3, three spacer members are used,I the middle member being welded to plate it and the outer spacers being removable by means or the removable bolt member di. The number of spacers tobe employed may be varied depending upon the diameter of the pipe to be cut thus adapting the present machine to pipes ot different diameters without changing any of the other parts of the machine. The pipe it is supported in position against the leg members by means of a chain 2i! extending around the pipe and fastened to angle irons il' and it.

As seen in Figure 2, a two-part ring-like vertical supporting member it depends from the frame or saddle ill to surround the pipe to be cut and comprises a stationary main supporting ring cut along a diameter to form an upper section it and a lower section it. The two sections are pivoted to each other in any suitable manner as at it and secured in closed position by means of cooperating bracing members extending laterally from the free ends of each ring section in the form of an alignment' device designated generally by the numeral il. is shown the alignment device comprises cooperating block-like members 2li and it each of which is respectively secured to .upper and lower ring sections it, it by means of welding. A swinging bolt :iii is pivotally mounted in the upper blocir member dit' and has a portion receivable in the slot portion til oi the lower block member iii. A tightening nut 3d locks the two block members together. As seen in Figures d, 5 block member 2t is provided with laterally spaced, right angularly disposed interlocking ridges t3 which cooperate with cooperating V-shaped grooves formed in member it in order to properly align and laterally brace the ring sections about the pipe. The outer periphery of the stationary ring member is provided with a groove tu for a purpose to be described.

An outer rotating ring member also formed in sections and tl, is provided with a tongue on its inner periphery which tongue is receivable in groove tt whereby the outer ring member is freely rotatable with the stationary ring member and locked thereto. The outer periphery 0i the rotating ring has a sprocket chain it removably secured thereto. The securing means comprises a plurality of plates ltu welded to the chain iii at intervals of about ve links and are bolted to the outer ring member by means of bolts di. As seen in Figure 2, the break in the chain occurs at one of the splits between the ring sections forming the outer ring indicated by numeral 42. A latch member 43 locks the sections together about the stationary ring and link portion 44 opposite 42 serves as a hinge about which the ring sections may open.

The operating mechanism for rotating the outer ring comprises a. housing 45 bolted to the frame through a bracket member 48. The housing 45 carries a rotatable shaft 41 on which is mounted a sprocket gear 48 and a mesh gear 49. A worm gear 50 is carried by arms 5I welded to the housing 45. Crank members 52 are provided for operating the worm gear.

Referring to Figures l and 2, the torch carrying member comprises a bracket arm 53 suitably bolted to the movable ring by means of bolts 54.

- The torch carrying sleeve 55 is mounted on the upper end of arm 53 by a threaded bolt 56 ex tending through the arm and held in fixed position by means of a thumb nut 51. From this construction it is clear that the sleeve is rotatable and may be adjusted in any desired position relative to the bracket arm. An acetylene torch 58, of weil known construction, extends through the sleeve 55, the torch being vertically adjustable in the sleeve and held in adjusted position by means of a thumbscrew 59. As seen in Figure 2, the bracket arm 53 is adjusted to an angle of ilve degrees to a line perpendicular to the axis of the pipe. The purpose of this angle is to preheat the pipe ahead of the cutting name.

An L-shaped brace 60 is welded to the lower portion of the stationary ring in order to protect the chain from dirt and foreign matter when the machine is set on the ground and not in use.

In operating the present device, the saddle or frame will be positioned at the desired point on the pipe so as to bring the torch nozzle upon the line along which the pipe is to be cut. It will be understood thatthe lower sections of the rings will be unhinged as the device is being applied to the pipe and upon closing of the hinged sections, the alignment device -21 forming the latch or securing means for the stationary ring will serve to accurately line up the machine about the pipe so as to produce a true, square pipe end. The frame will then be clamped to the pipe by means of chain 23. The torch carrying sleeve will then be adjusted for setting the proper degree of bevel and it is clear from the construction herein shown that the bevel may be outwardly or inwardly directed by adjusting the sleeve on either side of the perpendicular. 'I'he outer ring with the torch thereon is thereupon rotated slowly in a clockwise direction by the gear and sprocket assembly until the pipe is completely severed.

Thus it will be seen that the construction herein shown and described is well adapted to accomplish the objects of the invention. It will be understood, however, that the invention may be embodied otherwise than here shown and that in the form illustrated, certain minor changes may be made without departing from the spirit oi' the invention. Therefore, I do not wish to be limited precisely to the construction herein shown except as may be required by the appended claims considered with reference to the prior art.

Having thus described the invention, what is claimed is:

1. In a pipe beveling machine including a twopart ring-like supporting member, rigid bracing members extending laterally from the free ends of said member parts and having interlocking opposed face portions, and detachable securing means carried by said bracing members for clamping said face portions in engagement whereby to rigidly secure said ring parts in alignment.

2. The structure defined in claim l wherein the interlocking opposed face portions are in the form of right angularly disposed inrfltting tongue and groove portions.

3. The structure defined in claim l wherein the interlocking opposed face portions are laterally spaced and right angularly disposed, and ,thesecuring means for said bracing members is a swinging bolt mounted between the spaced interlocking portions of said members.

BERNARD V. ELLIO'I'I. 

